A web-app for systematic FEBIAD parametrizations has been develop and  now includes the ISAC Test Stand (ITS) :

https://beta.hla.triumf.ca/degaussing/FEBIAD-scan/

Upon landing in the web-app the ITS will be selected by default as well as the TMS:FC6:SCALECUR faraday cup, which corresponds the last cup of the ITS beamline.

To run a similar scan but on the total source current (FC0) the field has to change from TMS:FC6:SCALECUR to TMS:FC0:SCALECUR.

Each measurement will create a unique id (measurement_id), and the data can be retrieved from

https://beta.hla.triumf.ca/jaya/data/get/measure_id

Plot and analysis routines for the data generated by the FEBIAD-scan can be found in 

https://jupyter.triumf.ca/hub/login

for which you need a TRCOMP account. The routines are located in the group folder 

/group/ionsrc/fernando

Thermocouples installed on the left end plate x 2.

Monday, September 25, 2023, 16:23: Roughing.

Monday, September 25, 2023, 16:51: TP1B on.

Monday, September 25, 2023, 16:56: Waterline FS#5 open. Vacuum ok.

Monday, September 25, 2023, 16:58: Power on. TP1A on.

Tuesday, September 26, 2023, 09:44: Auto-ramping TGHT / TBHT to 350 / 150 A @ 2 A per minute. 

Tuesday, September 26, 2023, 16:11: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per minute. 

Tuesday, September 26, 2023, 16:12: IV4 opened. 

Tuesday, September 26, 2023, 16:45: Optics on/set. BIAS / EE / EZL @ 1 / -0.5 / 1 kV. TC @ 47 / 51 C

Tuesday, September 26, 2023, 21:00: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. Spark @ 28 kV.

Tuesday, September 26, 2023, 21:41: Mass & wire scans taken. Masses from 110 to 160? Curious. 

Wednesday, September 27, 2023, 08:24: TC @ 71 / 79 C. 

Wednesday, September 27, 2023, 11:57: BIAS / EE / EZL @ 35 / -1.8 / 15 kV.

Wednesday, September 27, 2023, 12:06: BIAS / EE / EZL @ 40 / -2.0 / 17 kV. Spark right after.

Wednesday, September 27, 2023, 12:23: Recovered computer & epics controls from previous spark.

Wednesday, September 27, 2023, 12:36: BIAS / EE / EZL @ 45 / -2.3 / 19 kV. Spark @ 44.5 kV.

Wednesday, September 27, 2023, 13:17: Large spark *

Wednesday, September 27, 2023, 13:21: Closed IV4. Reset TSG:TP1B. TMS:TP6 Spinning up? Did not reset right away. Reset optics. Epics & Firefox on the TS computer are down. 

Wednesday, September 27, 2023, 13:26: BIAS / EE / EZL @ 40 / -2.0 / 17 kV. Plus 1 spark while tapping the HV down. TMS:TP6 has recovered.

Wednesday, September 27, 2023, 14:01: HV to 0 kV. TS computer is disconnected from the network but epics is still running. 

Wednesday, September 27, 2023, 14:05: TC @ 69.8 / 81 C

Thursday, September 28, 2023, 09:23: TS computer is running again. Continue HV  tests.

Thursday, September 28, 2023, 09:31: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, September 28, 2023, 09:47: BIAS / EE / EZL @ 40 / -2.0 / 17 kV.

Thursday, September 28, 2023, 10:43: No sparks thus far.

Thursday, September 28, 2023, 10:46: BIAS / EE / EZL @ 45 / -2.3 / 19 kV.

Thursday, September 28, 2023, 10:50: Gauge for FEBIAD gases is "buzzing".

Thursday, September 28, 2023, 10:52: BIAS / EE / EZL @ 47.5 / -2.5 / 20 kV.

Thursday, September 28, 2023, 11:35: No sparks occurred. BIAS / EE / EZL @ 0 kV.

Thursday, September 28, 2023, 11:41: PS off. IV4 closed. 

Thursday, September 28, 2023, 11:42: IG1 off. Turbo pumps off.

Thursday, September 28, 2023, 12:35: Venting.

Tuesday, December 12, 2023, 12:39: Visual inspection.

Source tray: OK. Minor cracks on insulator near the coil conductor. Small chip in the upper TBHT insulator as well.

Water blocks: No leaks.

Pumping: TMS:RP2 recently purged. Otherwise all TP & RP OK.

Door seals: OK.

December 18 - January 15. Were not logged. Placed holder. Aurelia's tests. Included thermocouples in the oven & ionizer.

 Thursday, April 04, 2024, 09:49: Target inserted yesterday, April 3. mass marker tube connections carefully confirmed. Vacuum roughed, turbo pumps switched on at end of day. Water cooling turned on this morning. 

Thursday, April 04, 2024, 09:52 : Vacuum at 6.4e-6.  Not low enough to bypass lockout for TGHT TBHT ramp.

 Thursday, April 04, 2024, 11:31 increasing the coil current to 30A, causing the vacuum to increase, waiting for vacuum to recover.

 Thursday, April 04, 2024, 12:41 vacuum recovered but is at 6e-6 Torr. Changed Good Vacuum parameter in the target heater autoramp to 6.5e-6 and am increasing TGHT TBHT to 100A 100A at 1A/30s. Bad vacuum parameter left set at 7e-6 T

 Thursday, April 04, 2024, 12:51 Vacuum continuing to drop. 5.7e-6T

 Thursday, April 04, 2024, 14:26 ramping TGHT TBHT to 230A/230A at 1.4A/10s.  vacuum stable at 5.6e-6T

 Thursday, April 04, 2024, 14:48 increasing bias to 30kV

 Thursday, April 04, 2024, 15:00 performing mass scan, range up to ~150. Coil at 0A. TGHT TBHT at 230/230  -- 2024-04-04-15-30 mm LPSIS 1.txt

Thursday, April 04, 2024, 15:31 increasing COIL current to 20A. repeating mass scan. 2024-04-04-15-56 mm LPSIS 2.txt

 Thursday, April 04, 2024, 15:57   vacuum has increased over the course of the mass scan to 7e-6T.  decreasing coil to 0A, and decreasing TGHT to 180A at 1.4A/10s

 Thursday, April 04, 2024, 16:11 performing mass scan. coil at 0A, TGHT TBHT at 180/230 -- 2024-04-04-16-38 mm LPSIS 3.txt

Thursday, April 04, 2024, 16:39  increasing coil to 20A. repeating mass scan.   --  2024-04-04-17-05 mm LPSIS 4.txt

Thursday, April 04, 2024, 17:07  increasing TGHT to 230A at 1.4A/10s - - waiting for vacuum to settle and will compare results to salt output tomorrow

 Thursday, April 04, 2024, 17:51 decreasing bias to 0

 Friday, April 05, 2024, 09:27 increasing bias to 30kV -- epics crashed

Friday, April 05, 2024, 10:44 epics back, resuming bias increase to 30kV 

 Friday, April 05, 2024, 10:59 running mass scan for 'after overnight hot' data point ---2024-04-05-11-26 mm LPSIS 5.txt

Friday, April 05, 2024, 11:26 increased coil current to 20A, conducting mass scan. ---   2024-04-05-11-56 mm LPSIS 6.txt

Friday, April 05, 2024, 11:57 decreased coil current to 10A, conducting mass scan ---- 2024-04-05-12-25 mm LPSIS 7.txt

 Friday, April 05, 2024, 12:26 increasing TGHT to 260A

Friday, April 05, 2024, 12:36   conducting mass scan with coil current at 0A   ----    2024-04-05-13-02 mm LPSIS 8.txt

Friday, April 05, 2024, 13:03 conducting mass scan with coil current at 20A ----     2024-04-05-13-31 mm LPSIS 9.txt

Friday, April 05, 2024, 13:31 conducting mass scan with coil current at 10A ----      2024-04-05-13-59 mm LPSIS 10.txt

 Friday, April 05, 2024, 14:00 ramping TGHT to 290A

 Friday, April 05, 2024, 14:06  conducting mass scan with coil current at 0A   ----    2024-04-05-14-32 mm LPSIS 11.txt

 Friday, April 05, 2024, 14:33  conducting mass scan with coil current at 10A   ----    2024-04-05-15-00 mm LPSIS 12.txt

 Friday, April 05, 2024, 15:01    conducting mass scan with coil current at 20A  ---   2024-04-05-15-27 mm LPSIS 13.txt

 Friday, April 05, 2024, 15:33      conducting mass scan with coil current at 30A  ---  2024-04-05-16-01 mm LPSIS 14.txt

Friday, April 05, 2024, 16:02      conducting mass scan with coil current at 40A   ----    2024-04-05-16-31 mm LPSIS 15.txt

 Friday, April 05, 2024, 16:32 conducting mass scan with coil current at 50A --- 2024-04-05-17-00 mm LPSIS 16.txt

Friday, April 05, 2024, 17:01 coil reduced to 0A.  decreasing TGHT TBHT to 0 0 at 1A/30s, decreasing bias to 0

Wednesday, July 22, 2024, 11:41  - target installed

Wednesday, July 22, 2024, 13:31 - pumping down

Wednesday, July 22, 2024, 14:21 - turbo pumps on

Wednesday, July 22, 2024, 16:35 - water cooling on - no pressure increase

Tuesday, July 23, 2024, 09:42  - TGHT/TBHT ramping up to 580/230A at 1A/15s. 

 Tuesday, July 23, 2024, 09:55  increasing ramp rate to 1.4A/10s

 Tuesday, July 23, 2024, 11:17  increasing BIAS / EE / EZL to 30 / -1.5 / 13 kV.

Tuesday, July 23, 2024, 11:44    sparks more frequent than expected.   FC0 current at 1.17e-8A

Tuesday, July 23, 2024, 11:48    decreasing bias to 29.5k until spark frequency reduces

Tuesday, July 23, 2024, 13:23   once back up to 30kV, mass scan was run

Tuesday, July 23, 2024, 13:23 bias ee ezl were dropped to zero. reservoir heater was switched to 5A. the vacuum jumped up and shut down TGHT TBHT. heater turned off. TGHT TBHT restarted and reheated.

Tuesday, July 23, 2024, 13:24 reservoir heater turned to 2A while monitoring the vacuum. then to 3A as it appeared to be stable. at 4A the vacuum began slowly increasing.

Tuesday, July 23, 2024, 13:30   4A vacuum plateaus and recovering

Tuesday, July 23, 2024, 14:30 once reservoir heater is at 5A with a stable vacuum, increasing BIAS / EE / EZL to 30 / -1.5 / 13 kV

Tuesday, July 23, 2024, 14:50 running mass scan

Tuesday, July 23, 2024,  15:20 dropping BIAS / EE /  EZL to zero

Tuesday, July 23, 2024, 15:40   turning off reservoir heater

Tuesday, July 23, 2024, 15:51  increasing BIAS EE EZL to 30 -1.5 13 kV.

Tuesday, July 23, 2024, 16:05  running mass scan

Tuesday, July 23, 2024, 17:00   cooling target. TGHT TBHT to 0 at -1A/30s

Wednesday, July 24, 2024, 09:24 purged water lines and turned off TP1A and TP1B, TP6 and TP2 --- waiting for TP to slow down.  (will be venting beam line to change window)

Friday, September 06, 2024:  New TSH:TGHT power supply has been installed and is now functional. Magna-Power TSD-900/208. The TSH:TBHT power supply has also been cleaned, and the COIL power supply replaced with a duplicate that should function identically.

Tuesday, December 03, 2024, 14:55  ANODE/CATHODE power supply switched to cathode mode, NEGATIVE

 Note, ground and HVC (high voltage common) are used interchangeably here.

Monday, December 16, 2024,   in the previous test, elog 1038, it was found that the cathode was unable to hold any voltage and was shorted to HVC. The cathode was shorted directly to ground, with the cathode supply current limiting upon being powered, unable to reach even 1V.

After testing, the ANODE power supply stopped functioning and was unable to provide and voltage or current.

When the target was removed, it was found that the TBHT terminal was just ~100Ω from HVC. When I shorted the TGHT to TBHT terminal, as they are when the target is installed, the resistance from TBHT to HVC dropped to just 1Ω. Prior to the anode power supply stopping, it was found that when it was powered on with no target present, it was able to hold voltage, but still drew significant current: up to 400mA when provided less that 20V. This should be completely open, losing no current at all.

Keiko and the controls team have been looped in to address the issue with the ANODE power supply as it may be a controls issue. They believe there are a few possibilities for its error that must be investigated prior to deferring to the power supplies group. This will continue to be investigated

    ********** UPDATE: ISSUE RESOLVED ********* There is simply a physically triggered interlock that requires the faraday cage door to be closed to operate the ANODE power supply

When investigating the resistive short from the TBHT, I first noted the resistances between each of the channels: TGHT(-) to TGHT(+) 30↨Ω; TBHT(-) to TBHT(+) 20Ω; TBHT(-) to TGHT(-) 100Ω; TBHT(+) to TGHT(+) 140Ω. I also reconfirmed and noted relevant connections at the feedthroughs: There are NO visible shorts to HVC from the TGHT or TBHT feedthroughs. From TGHT(-), there is one 50kΩ resistor with varistor, between TGHT(-) and TGHT(+) there is a100Ω with varistor. I then removed the back of the faraday cage to investigate possible paths to ground from the TGHT and/or TBHT. This showed that TGHT- was grounded through a varistor (checked, functioning correctly, OL at low voltage), TGHT- to + has varistor||100Ω, TBHT- to + has varistor||100Ω, and TBHT- to TGHT- has varistor||100Ω. These fit in accordance with the observed resistances between the terminals.  

I also disconnected the ANODE power supply from its output wire to further investigate without possible issues from the power supply. At this point, (after I had remade the varistor connections) I began to observe that the TGHT and TBHT terminals were all detached from ground by 50kΩ (expected amount, given that there is a 100k||100k resistor from TBHT- feedthrough to ground). When I reattached the anode power supply, that value dropped to 35kΩ, I assume due to internal resistance of the power supply. I placed everything back in position and (repeatedly) ensured that the 35kΩ separation persisted. It seems that this shorting issue has resolved itself. It may be that the was an accidental connection made from an unshielded wire inside the faraday cage.

ABC 123 blah blah blah...

link to old e-log

Test stand vented

The gas system has been checked. The variable valve opens at about 7.55 very fast. Please be careful when using it. Stepsize for opening around this value should be 0.01. Gas lines have been pumped with pump in the high voltage rack. Ne leak was opened to release pressure.

test stand vented

Evgeniy rebooted the ISAC Test Stand IOC. Re-started EPICS at the Test Stand.

Found all 4 turbo pumps off and their backing valves closed. Re-started the pumps.

In January Controls will install a new firewall for ISAC Test Stand. Until then ISAC Test Stand can be used, but it may require an IOC reboot once in while.

turbo pumps shut off due to work on cooling water system

All turbo pumps have been restarted after cooling water is back and running.

 Calibrating the gas valve

ISAC Test Stand FEBIAD Ion Source and ISACT optics screen grabs before practicing tuning.  Tune saved as: data/febiaddata/tune/120228-1620_0.snap and data/isactdata/tune/120228-1620_0.snap respectively.<br>

Seeing 1.93e-06 on TMS:FC0 and 3.30e-09 on TMS:FC6.